sidereal time
/saɪˈdɪə.ɹiəl taɪm/
Word Rarity
Very rare
Frequency: Zipf frequency 2.21 in modern English
15
Scrabble Score
12
Letters
4
Syllables
9
Unique Chars
Meaning
noun
Time measured by the apparent diurnal motion of the vernal equinox; approximated by that based on the rotation of planet Earth relative to the seemingly fixed stars.
Uncountable